Improvement in brakes for baby-carriages



W. P. WALLBERG. Brake for Baby-Carriages.

Patented Dec. 9, I879.

lllll l l llilll INVENTOR:

ATTORNEYS.

NPEfF-RS, mum-mun QAPHER. WASHINGTON. B C.

- UNITED STATES PATENT OFFICE.

WILLIAM F. WALLBERG, OF BROOKLYN, NEW YORK.

IMPROVEMENT iN BRAKES Foe BABY-CARRIAGES.

Specification forming part of Letters Patent No. 222,552, dated December 9, 1879 application filed October 20, 1879.

To all whom itmay concern:

y Be it known that 1, WILLIAM F. WALL- BERG, of Brooklyn, in the county of Kings i and State of New York, have invented a new Improvement in Brakes for Baby-Carriages,

of which the following is a specification.

Figure l is a sectional side elevation of my improved baby-carriage. Fig. 2 is a rear clevation of the carriage,

Similar letters of reference indicate corref spondingparts.

: "The. object of this, invention is to furnish fibrakes for baby-carriages so constructed as to lock the wheels automatically whenever the handles are released, so that it will be impossible for the carriages to start forward accidentally.

The invention consists in the combination,

with the wheels, axle, and handles of a babycarriage, of a brake constructed as will be hereinafter fully described, so that it will be To the inner ends ofthe hubs of the wheels A are attached disks F, the projecting edges of which have notches formed in them to receive the ends of the levers G. The levers G pass through and are pivoted to short studs H, attached to the axle'B. The inner ends of "the levers G overlap each other, are flattened to fit upon each other, and are perforated to receive the rod I, which has a disk or shoulder, J, formed upon it to rest upon the levers G, and passes down through thecenter of the spring K and the axle B. The spring K may i be. made in the shape of a half-elliptic spring, as shown in Fig.2, andthis form I prefer; or

it may be a spiral spring, or of any other desired form. The'rod I passesupt-hrough an eye, L, attached to the cross-bar of the handles E, and to its upper end are pivoted the inner ends of two levers, M, which pass through eyes N, attached to the end parts of the crossbar of the handles E. The levers M pass along the cross-bar of the handles E, and rise gradually above the said cross-bar as they approach the end of rod I. The levers M may be rigidly connected with the end of the rod I, if desired; but I prefer to pivot them, as it lessens the side pressure upon the rod I.

With this construction, as the cross-bar of the handles E is grasped to propel the carriage, the pressure upon the levers M forces down the rod I and raises the levers G out of the notches of the disks F, allowing the wheels A to revolve. As soon as the pressure upon the levers M is Withdrawn by releasing the crossbar of the handles E, the elasticity of the spring K raises the rod I and the inner ends of the levers G, forcing the outer ends of the levers G down upon the edges of the disks F, so that they will enter the notches of the said disks F and lock the wheels.

By thisimprovement the wheels of the carriage will always be locked whenever the carriage is allowed to stand, so that it will be impossible for it to start forward and be overturned or run into the gutter or against an obstruction should the carriage be left upon an inclined surface.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a baby-carriage, the combination, with the wheels A, axle B, and handles E, of the notched disk's F, the levers G, the spring K, and rodl, and the levers M, substantially as herein shown and described, so that the wheels A of the carriage may be locked automatically whenever the handles are released, as

set forth.

WILLIAM F. WALLBERG. Witnesses:

JAMES T. GRAHAM, O. SEDGWIGK. 

